I'm developing a prototype that uses 144 pair of proximity sensors, 2 barcode scanners, and 6 motors (1 stepper and 5 servo). The arduino mega has only 54 i/o pins. Is it possible to use 3 arduino mega using i2c protocol? Or are there any other better ideas to make the project working?

Feasibility of thesis prototype

carlo143 May 13, 2018, 1:38pm 5

I might need 7 of these to accommodate all the I/O. Do you think it is better to use MCP23017 than using other two arduino mega?

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